Tutorials, deep dives and product notes — built for developers.
Claude Fable 5 ($50/1M) vs GPT-5.5 Pro ($180/1M). Fable 5 leads all 8 coding benchmarks by +11.8 pts avg. GPT-5.5 Pro fights back on BrowseComp (90.1%) and FrontierMath (39.6%) via parallel compute — but has no published Pro coding scores. Updated with separate GPT-5.5 Pro benchmarks.
Claude Fable 5 leads every benchmark (80.3% Pro, 88.0% Terminal-Bench, ~87% Multi). Now the undisputed #1 for Go coding across all workflows. Updated June 9, 2026.
Claude Fable 5 leads every benchmark (80.3% Pro, 88.0% Terminal-Bench, ~87% Multi). Now the undisputed #1 for all Rust workflows. Updated June 9, 2026.
Terminal-Bench 2.1: DeepSeek V4.1 Flash remains public-board leader at 90.6%. Adds Step 5 Preview at 85.0% as a separately labeled StepFun provider run with API pricing and harness caveats. Updated October 16, 2026.
SWE-bench Pro: Anthropic reports Opus 5.5 at 89.9%, Sonnet 5.5 at 81.3%, and newly added Haiku 5.5 at 64.8%. Vendor results remain separate from Scale's standardized rows. Updated October 16, 2026.
Interactive pricing calculator for 43 AI models, now including Claude Opus 5.5 ($4/$20), GPT-6 Sol ($2/$10), GPT-6 Luna ($0.10/$0.50), and Grok 4.7 ($2/$6) per 1M input/output tokens. Refreshed GPT-5.6 prices from OpenAI’s current API pricing. Updated September 25, 2026.
GitHub Copilot switched to usage-based AI Credits on June 1, 2026 — and heavy users saw their bills skyrocket. Compare the best alternatives: Cursor, Claude Code, CodingFleet, Windsurf, Codex, Aider & more. Real pricing, market share data, developer reactions, and a decision framework.
Claude Opus 4.8 leads SWE-bench Pro by 8.6 points (69.2% vs 60.6%) — but Qwen 3.7 Max fights back on Terminal-Bench (69.7% vs 65.4%) and LiveCodeBench (91.6% vs 88.8%). With native Anthropic API compatibility and 3.33× lower cost, Qwen is the first model you can drop into Claude Code as a replacement.
Claude Opus 4.8 (69.2% SWE-bench Pro, $25/1M) vs DeepSeek V4 Pro (55.4%, $0.87/1M). The coding king leads by 13.8 points — but DeepSeek wins LiveCodeBench (93.5%) and Terminal-Bench. Is the 28.7× premium worth it?
What SWE-bench Pro actually measures, how it works (1,865 tasks, 41 repos, 123 languages), why OpenAI abandoned SWE-bench Verified, the DeepSWE audit that found 32% verifier errors, and how to use coding benchmarks correctly. The definitive explainer.
Both $15/1M output. GPT-5.4 is faster (242.5 char/s vs 173.3 on CodingFleet) and stronger on benchmarks (SWE-bench Pro +14, Terminal-Bench +16). Sonnet 4.6 counters with 90% cache discounts, no long-context surcharge, and mature Claude Code ecosystem. The real verdict: use both.
Claude Fable 5 now leads ORM queries & DB administration (80.3% Pro, 88.0% Terminal-Bench). Gemini still leads text-to-SQL. Updated June 9, 2026.